（1) The adjustment of the calendar, day of the week, and moon phase of the watch should not be operated between 21:00PM---3:00AM of the watch time. During this period, the calendar function is in operation, and it is also when the gear meshing degree is low. Action can damage the internal parts of the watch.

（2) The day and calendar tabs are divided into two types, fast and slow, due to the different grids. The first type is completed within ±5 minutes, and the second type is completed within 3 hours. （3) In case of a watch with a screw-type crown, do not pull it hard, please turn it counterclockwise to open the locked crown. After adjusting the time, turn the crown clockwise and push it into the lock to avoid into the water.（4) If you need to adjust the date on a watch with a calendar, please first adjust the calendar to the day before the date you want, and then turn the hour hand to adjust the date. The date will change when the hour hand passes 12 midnight, which can avoid direct adjustment of the date. Confused day and night.

（5) Please do not adjust the date between 22:00-2:00 (20:00-4:00 for some watches), which may cause damage to the watch and incorrect calendar jump.

（6) In order to prolong the service life of the watch, many watches use the slow jump method, that is, the time period is gradually jumped around midnight. Generally, it is normal to complete the jump before 2:00 am, and some watches are completed until 4:00 am. So you won't be surprised to see that the date on your watch hasn't changed at 1am.

（7) It can be adjusted if the calendar jumps during the day. If it is found that the calendar jumps around noon during the day, the time of the watch is usually 12 hours faster or slower. For example, it is actually 11 am now, but the watch is before At 11 o'clock in the afternoon, you only need to turn the hour hand of the watch one lap to change the afternoon to the morning.

（8) Generally, the watch needs to be dialed clockwise for time adjustment, not counterclockwise. Turning the watch counterclockwise can easily cause the deviation of the watch needle (the quartz two-hand type should be turned counterclockwise). It also affects the accuracy of the watch.

（9) Different styles of watches have different adjustment methods, but the factors of morning and afternoon need to be considered when adjusting watches with calendar function